From the publisher's web site: This collection reveals the native creatures from the Astral Plane, Ethereal Plane, and the Plane of Shadow. The following old edition monsters have been converted to v3.5 rules - apparition, astral whale, astral searcher, astral streaker, berbalang, chronolily, chulcrix, devete, dhour, astral dragon, ebon tiger, ether sea horse, garmorm, gk'lok, gloomwing, ether golem, kodragon, magran, meme, memedi, nathri, nethling, plasm, shadeling, spectral hound, planar spider, shadow symbiont, terithran, translator, and tween.